As after-dinner cocktails go, the whiskey sour is one of the most famous, and for good reason. By mixing Irish whiskey and lemon juice with egg white and sloe berry bitters, you get a delicious classic cocktail that has really stood the test of time.
When using a high quality whisky such as The Glenlivet 18-year-old, the key is to use the finest possible ingredients, the freshest oranges and a blend of bitters designed specifically to bring out the very best of the whisky.